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Current weather in Mechanicsburg is few clouds.

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Is the weather forecast for Mechanicsburg updated regularly?

Weather data for Mechanicsburg is updated regularly with the latest available observations and forecasts.

Now · 11:11 PM

Mechanicsburg Weather & Hourly Forecast

United States · Pennsylvania · 17055

64°F

Mostly clear night

Feels like: 65°F

💧 Humidity 67% 🌡 Pressure 30.21 inHg 💨 Wind 1 mph 👁 Visibility 22.3 mi ☁ Clouds 16% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Mechanicsburg

Tomorrow

12:00 AM

Clear night

63° 💧 None 💨 1 mph H 70%30.24 inHg

3:00 AM

Mostly cloudy night

59° 💧 None 💨 0 mph H 78%30.24 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 1 mph H 85%30.24 inHg

9:00 AM

Partly cloudy

65° 💧 None 💨 1 mph H 75%30.27 inHg

12:00 PM

Sunny

78° 💧 None 💨 0 mph H 46%30.24 inHg

3:00 PM

Mostly sunny

83° 💧 None 💨 2 mph H 41%30.21 inHg

6:00 PM

Overcast

81° 💧 None 💨 2 mph H 46%30.18 inHg

9:00 PM

Mostly cloudy night

73° 💧 None 💨 4 mph H 63%30.21 inHg

Wednesday

12:00 AM

Mostly clear night

70° 💧 None 💨 6 mph H 74%30.21 inHg

3:00 AM

Clear night

69° 💧 None 💨 6 mph H 71%30.18 inHg

6:00 AM

Mostly cloudy night

66° 💧 None 💨 6 mph H 73%30.18 inHg

9:00 AM

Overcast

72° 💧 None 💨 4 mph H 62%30.18 inHg

12:00 PM

Mostly cloudy

84° 💧 0.004 in 💨 6 mph H 43%30.15 inHg

3:00 PM

Partly cloudy

89° 💧 None 💨 8 mph H 39%30.06 inHg

6:00 PM

Mostly sunny

88° 💧 None 💨 8 mph H 43%30.00 inHg

9:00 PM

Mostly clear night

82° 💧 None 💨 10 mph H 47%29.97 inHg

Tomorrow

12:00 AM

Clear night

63° 💧 None 💨 1 mph H 70%30.24 inHg

1:00 AM

Partly cloudy night

62° 💧 None 💨 0 mph H 72%30.24 inHg

2:00 AM

Mostly cloudy night

61° 💧 None 💨 1 mph H 76%30.24 inHg

3:00 AM

Mostly cloudy night

59° 💧 None 💨 0 mph H 78%30.24 inHg

4:00 AM

Mostly cloudy night

58° 💧 None 💨 1 mph H 79%30.24 inHg

5:00 AM

Mostly cloudy night

57° 💧 None 💨 2 mph H 82%30.24 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 1 mph H 85%30.24 inHg

7:00 AM

Partly cloudy

56° 💧 None 💨 1 mph H 88%30.27 inHg

8:00 AM

Mostly cloudy

59° 💧 None 💨 2 mph H 84%30.27 inHg

9:00 AM

Partly cloudy

65° 💧 None 💨 1 mph H 75%30.27 inHg

10:00 AM

Sunny

70° 💧 None 💨 1 mph H 61%30.27 inHg

11:00 AM

Sunny

75° 💧 None 💨 1 mph H 52%30.27 inHg

12:00 PM

Sunny

78° 💧 None 💨 0 mph H 46%30.24 inHg

1:00 PM

Sunny

80° 💧 None 💨 1 mph H 43%30.24 inHg

2:00 PM

Mostly sunny

82° 💧 None 💨 2 mph H 42%30.21 inHg

3:00 PM

Mostly sunny

83° 💧 None 💨 2 mph H 41%30.21 inHg

4:00 PM

Mostly sunny

84° 💧 None 💨 4 mph H 41%30.18 inHg

5:00 PM

Mostly sunny

82° 💧 None 💨 6 mph H 43%30.18 inHg

6:00 PM

Overcast

81° 💧 None 💨 2 mph H 46%30.18 inHg

7:00 PM

Overcast

78° 💧 None 💨 3 mph H 57%30.18 inHg

8:00 PM

Clear night

74° 💧 None 💨 3 mph H 61%30.18 inHg

9:00 PM

Mostly cloudy night

73° 💧 None 💨 4 mph H 63%30.21 inHg

10:00 PM

Mostly cloudy night

72° 💧 None 💨 5 mph H 64%30.21 inHg

11:00 PM

Partly cloudy night

71° 💧 None 💨 5 mph H 68%30.21 inHg

Wednesday

12:00 AM

Mostly clear night

70° 💧 None 💨 6 mph H 74%30.21 inHg

1:00 AM

Mostly cloudy night

70° 💧 None 💨 6 mph H 72%30.21 inHg

2:00 AM

Partly cloudy night

70° 💧 None 💨 6 mph H 69%30.21 inHg

3:00 AM

Clear night

69° 💧 None 💨 6 mph H 71%30.18 inHg

4:00 AM

Partly cloudy night

67° 💧 None 💨 6 mph H 73%30.18 inHg

5:00 AM

Overcast night

67° 💧 None 💨 6 mph H 73%30.18 inHg

6:00 AM

Mostly cloudy night

66° 💧 None 💨 6 mph H 73%30.18 inHg

7:00 AM

Mostly cloudy

66° 💧 None 💨 5 mph H 73%30.18 inHg

8:00 AM

Overcast

68° 💧 None 💨 6 mph H 68%30.18 inHg

9:00 AM

Overcast

72° 💧 None 💨 4 mph H 62%30.18 inHg

10:00 AM

Partly cloudy

76° 💧 None 💨 5 mph H 56%30.18 inHg

11:00 AM

Partly cloudy

81° 💧 None 💨 5 mph H 48%30.18 inHg

12:00 PM

Mostly cloudy

84° 💧 None 💨 6 mph H 43%30.15 inHg

1:00 PM

Mostly cloudy

86° 💧 None 💨 9 mph H 43%30.12 inHg

2:00 PM

Partly cloudy

84° 💧 0.004 in 💨 5 mph H 48%30.09 inHg

3:00 PM

Partly cloudy

89° 💧 None 💨 8 mph H 39%30.06 inHg

4:00 PM

Partly cloudy

89° 💧 None 💨 12 mph H 40%30.03 inHg

5:00 PM

Mostly sunny

88° 💧 None 💨 10 mph H 41%30.00 inHg

6:00 PM

Mostly sunny

88° 💧 None 💨 8 mph H 43%30.00 inHg

7:00 PM

Mostly sunny

85° 💧 None 💨 8 mph H 45%29.97 inHg

8:00 PM

Mostly clear night

83° 💧 None 💨 9 mph H 45%29.97 inHg

9:00 PM

Mostly clear night

82° 💧 None 💨 10 mph H 47%29.97 inHg

10:00 PM

Mostly clear night

81° 💧 None 💨 11 mph H 47%30.00 inHg

11:00 PM

Clear night

79° 💧 None 💨 12 mph H 49%29.97 inHg

Thursday

12:00 AM

Clear night

77° 💧 None 💨 11 mph H 52%29.97 inHg

1:00 AM

Clear night

76° 💧 None 💨 10 mph H 56%29.94 inHg

2:00 AM

Clear night

74° 💧 None 💨 9 mph H 58%29.94 inHg

3:00 AM

Clear night

73° 💧 None 💨 8 mph H 60%29.91 inHg

4:00 AM

Clear night

73° 💧 None 💨 7 mph H 59%29.91 inHg

5:00 AM

Mostly clear night

72° 💧 None 💨 6 mph H 61%29.91 inHg

6:00 AM

Partly cloudy night

72° 💧 None 💨 6 mph H 63%29.94 inHg

7:00 AM

Mostly cloudy

71° 💧 0.002 in 💨 5 mph H 67%29.94 inHg

8:00 AM

Light rain

72° 💧 0.028 in 💨 6 mph H 78%29.97 inHg

5:00 PM

Moderate rain

74° 💧 None 💨 4 mph H 94%29.85 inHg

8:00 PM

Heavy rain

72° 💧 None 💨 5 mph H 98%29.85 inHg

11:00 PM

Overcast night

71° 💧 None 💨 8 mph H 97%29.88 inHg

Friday

2:00 AM

Mostly clear night

67° 💧 None 💨 7 mph H 93%29.88 inHg

5:00 AM

Partly cloudy night

65° 💧 None 💨 7 mph H 95%29.91 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 7 mph H 93%30.00 inHg

11:00 AM

Sunny

71° 💧 None 💨 7 mph H 65%30.03 inHg

2:00 PM

Sunny

75° 💧 None 💨 6 mph H 48%30.00 inHg

5:00 PM

Sunny

75° 💧 None 💨 5 mph H 48%29.97 inHg

8:00 PM

Clear night

68° 💧 None 💨 3 mph H 75%30.00 inHg

11:00 PM

Clear night

64° 💧 None 💨 0 mph H 82%30.06 inHg

Saturday

2:00 AM

Clear night

59° 💧 None 💨 2 mph H 92%30.09 inHg

5:00 AM

Clear night

58° 💧 None 💨 3 mph H 95%30.09 inHg

8:00 AM

Sunny

60° 💧 None 💨 4 mph H 89%30.15 inHg

11:00 AM

Sunny

72° 💧 None 💨 4 mph H 67%30.15 inHg

2:00 PM

Sunny

79° 💧 None 💨 6 mph H 52%30.12 inHg

5:00 PM

Mostly sunny

80° 💧 None 💨 6 mph H 52%30.09 inHg

8:00 PM

Mostly clear night

74° 💧 None 💨 7 mph H 64%30.09 inHg

11:00 PM

Partly cloudy night

70° 💧 None 💨 6 mph H 73%30.15 inHg

Sunday

2:00 AM

Partly cloudy night

70° 💧 None 💨 8 mph H 86%30.15 inHg

5:00 AM

Light rain

68° 💧 None 💨 4 mph H 91%30.12 inHg

8:00 AM

Overcast

68° 💧 None 💨 5 mph H 93%30.15 inHg

11:00 AM

Overcast

75° 💧 None 💨 5 mph H 83%30.15 inHg

2:00 PM

Light rain

79° 💧 None 💨 6 mph H 76%30.09 inHg

8:00 PM

Overcast night

77° 💧 None 💨 3 mph H 76%30.12 inHg

Monday

2:00 AM

Clear night

73° 💧 None 💨 2 mph H 88%30.09 inHg

8:00 AM

Overcast

67° 💧 None 💨 0 mph H 100%30.15 inHg

2:00 PM

Overcast

67° 💧 None 💨 1 mph H 99%30.18 inHg

8:00 PM

Partly cloudy night

82° 💧 None 💨 5 mph H 64%30.15 inHg

Tuesday

2:00 AM

Partly cloudy night

76° 💧 None 💨 5 mph H 79%30.12 inHg

8:00 AM

Overcast

72° 💧 None 💨 6 mph H 95%30.18 inHg

2:00 PM

Overcast

72° 💧 None 💨 6 mph H 95%30.18 inHg

8:00 PM

Mostly cloudy night

85° 💧 None 💨 9 mph H 65%30.12 inHg

Wednesday

2:00 AM

Moderate rain

72° 💧 None 💨 7 mph H 99%30.12 inHg

8:00 AM

Partly cloudy

72° 💧 None 💨 4 mph H 97%30.12 inHg

2:00 PM

Moderate rain

71° 💧 None 💨 2 mph H 98%30.15 inHg

8:00 PM

Light rain

69° 💧 None 💨 10 mph H 92%30.15 inHg

Thursday

2:00 AM

Partly cloudy night

69° 💧 None 💨 7 mph H 78%30.18 inHg

8:00 AM

Sunny

59° 💧 None 💨 8 mph H 81%30.24 inHg

2:00 PM

Sunny

59° 💧 None 💨 8 mph H 84%30.33 inHg

8:00 PM

Clear night

72° 💧 None 💨 6 mph H 51%30.30 inHg

Friday

2:00 AM

Clear night

65° 💧 None 💨 4 mph H 70%30.24 inHg

8:00 AM

Mostly cloudy

57° 💧 None 💨 2 mph H 87%30.21 inHg

2:00 PM

Overcast

56° 💧 None 💨 3 mph H 86%30.21 inHg

8:00 PM

Overcast night

74° 💧 None 💨 5 mph H 53%30.09 inHg

Saturday

2:00 AM

Partly cloudy night

67° 💧 None 💨 2 mph H 81%30.00 inHg

8:00 AM

Mostly sunny

61° 💧 None 💨 5 mph H 81%29.97 inHg

2:00 PM

Mostly cloudy

64° 💧 None 💨 5 mph H 81%29.97 inHg

8:00 PM

Overcast night

72° 💧 None 💨 6 mph H 61%29.97 inHg

Sunday

2:00 AM

Partly cloudy night

66° 💧 None 💨 4 mph H 78%29.97 inHg

8:00 AM

Mostly sunny

58° 💧 None 💨 4 mph H 77%30.03 inHg

2:00 PM

Overcast

56° 💧 None 💨 3 mph H 72%30.09 inHg

8:00 PM

Mostly clear night

69° 💧 None 💨 3 mph H 56%30.03 inHg

Monday

2:00 AM

Clear night

64° 💧 None 💨 3 mph H 78%30.00 inHg

8:00 AM

Mostly sunny

60° 💧 None 💨 0 mph H 90%30.03 inHg

2:00 PM

Mostly sunny

58° 💧 None 💨 4 mph H 95%30.09 inHg

8:00 PM

Mostly clear night

75° 💧 None 💨 4 mph H 48%30.06 inHg

Tuesday

2:00 AM

Overcast night

67° 💧 None 💨 5 mph H 67%30.09 inHg

8:00 AM

Partly cloudy

60° 💧 None 💨 4 mph H 77%30.15 inHg

2:00 PM

Overcast

59° 💧 None 💨 7 mph H 78%30.21 inHg

In Mechanicsburg and, more broadly, across the state of Pennsylvania: Clear skies continue into the evening, with temperatures remaining mild, ranging from 66 to 73 degrees Fahrenheit. Winds will be light, coming from the northeast at up to 2 mph, with gusts reaching 2 mph. No precipitation is expected during the upcoming hours, so conditions will be dry and comfortable. It should be a calm and clear evening, making it suitable for outdoor activities. Temperatures will gradually stay within the mild range as the night progresses.

15-Day Weather Outlook for Mechanicsburg

Wednesday, Sep 9Wed Sep 9

Mostly cloudy 89°/66° 💧 None 💨 12 mph

Thursday, Sep 10Thu Sep 10

Moderate rain 83°/71° 💧 0.346 in 💨 12 mph

Friday, Sep 11Fri Sep 11

Heavy rain 75°/65° 💧 0.954 in 💨 8 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 80°/58° 💧 0.000 in 💨 6 mph

Sunday, Sep 13Sun Sep 13

Light rain 79°/68° 💧 0.049 in 💨 8 mph

Monday, Sep 14Mon Sep 14

Overcast 77°/67° 💧 0.003 in 💨 3 mph

Tuesday, Sep 15Tue Sep 15

Overcast 82°/72° 💧 0.011 in 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Moderate rain 85°/71° 💧 0.308 in 💨 9 mph

Thursday, Sep 17Thu Sep 17

Light rain 69°/59° 💧 0.468 in 💨 10 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 72°/56° 💧 None 💨 6 mph

Saturday, Sep 19Sat Sep 19

Overcast 74°/61° 💧 None 💨 5 mph

Sunday, Sep 20Sun Sep 20

Overcast 72°/56° 💧 None 💨 6 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 69°/58° 💧 None 💨 4 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 75°/59° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mechanicsburg

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mechanicsburg

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 12:00 AM

PM2.5 Fine particles Good 5,9µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 7,9µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 30,7µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 17,4µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Mechanicsburg

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,9High —Unavailable

Tomorrow UV 6,9High 😐Moderate

Wednesday UV 5,9Moderate 😐Moderate

Thursday UV 3,1Moderate 🙂Fair

Friday UV 6,7High 🙂Fair

Saturday UV 6,0High —Unavailable

Sunday UV 7,0High —Unavailable

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Mechanicsburg

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MECHANICSBURG, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 12:00 AM–1:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 12:00 AM–1:00 AM Astronomical darkness: 9:04 PM–5:08 AM

☁ Cloud cover 5% Real hourly forecast for the best viewing hour.

☾ Moonlight 15% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 33° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min58%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Mechanicsburg were last refreshed today at 11:03 PM. The current forecast period extends through 09/09/2026 at 9:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.